public static void DeleteValues(PIPoint piPoint, AFTime st, AFTime et, bool forceUpdateValuesMethod = false)
{
var timerange = new AFTimeRange(st, et);
if (piPoint.Server.Supports(PIServerFeature.DeleteRange) && forceUpdateValuesMethod == false)
{
var errors = piPoint.ReplaceValues(timerange, new List <AFValue>());
if (errors != null && errors.HasErrors)
{
_logger.Error(errors.Errors);
_logger.Error(errors.PIServerErrors);
}
}
else
{ // fallback on the old fashion way of doing the delete
// if code goes here this may be much slower to delete the values.
_logger.Warn("The ReplaceValues method is not implemented on the target PI DataArchive or the forceUpdateValuesMethod flag was used, falling back to the previous longer method ( read and remove)");
var dataToDelete = piPoint.RecordedValues(timerange, AFBoundaryType.Inside, string.Empty, false);
if (dataToDelete.Count > 0)
{
piPoint.UpdateValues(dataToDelete, AFUpdateOption.Remove);
}
}
}